<?php
/**
 * @ Fmash Top System
 * @ version: 3.0
 * @ author: i.coffee.smile@mail.com
 * @ date:2011-1-28
 * @ file:wordstream.php $23
 */
 
function checkTitle($filename)
{
	$file     = fopen($filename, 'rb');
	@$bin      = fread($file, 2); //只读2字节
	@fclose($file);
	$strInfo  = @unpack('c2chars', $bin);
	$typeCode = intval($strInfo['chars1'].$strInfo['chars2']);
	$fileType = '';
	switch ($typeCode)
	{
		case 7790:
		$fileType = 'exe';
		break;
		case 7784:
		$fileType = 'midi';
		break;
		case 8297:
		$fileType = 'rar';
		break;
		case 255216:
		$fileType = 'jpg';
		break;
		case 7173:
		$fileType = 'gif';
		break;
		case 6677:
		$fileType = 'bmp';
		break;
		case 13780:
		$fileType = 'png';
		break;
		default:
		$fileType = 'unknown'.$typeCode;
	}
	//Fix
	if ($strInfo['chars1']=='-1' && $strInfo['chars2']=='-40' ) {
		return 'jpg';
	}
	if ($strInfo['chars1']=='-119' && $strInfo['chars2']=='80' ) {
		return 'png';
	}
	return $fileType;
}